Platform
AI visibility trackingWhere you show up, across every modelPrompt researchThe questions your buyers actually askAI search optimizationOn-page, off-page and technical fixesAgentic workflowsSet it once, it watches and briefs the fixMCP & REST APIBuild on top of ZeroRank dataCo-pilotAsk your data anything, in chatNew
Free to startRun a full report before you enter a card
Solutions
Marketing teamsProve AI search moves pipeline, not rankAgenciesUnlimited seats, white-label reportsEnterpriseSSO, audit trails and a security review
ResourcesBlogHow AI search behaves, in the fieldUniversityShort video lessons on AI search, freeDocsSet-up guides and the API referenceFree toolsCheck a prompt or a domain, freeCompareZeroRank against the alternatives
CompanyAbout usWho builds ZeroRank, and whyCase studiesWhat changed, and by how muchWall of LoveCustomer reviews and video reviewsChangelogEverything we shipped, datedContactTalk to a human about your setup
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Performance

Image Optimization Checker

Check if images on your webpage are properly optimized.

Image Optimization Checker

About this tool

Analyze images on your webpage for optimization opportunities. Check for modern formats (WebP, AVIF), proper sizing, and compression to improve page load times.

Image Alt Tag Checker

Scan your webpage to ensure all images have properly defined alt tags.

URL checkOpen Webpage File Size Check

Analyze the total download size of your webpage.

URL checkOpen Page Request Checker

Count the number of network requests needed to load a webpage.

URL checkOpen
No signup, no catch

What the free tools actually do

Seven of them run in the browser and ask for nothing. The eighth asks for a domain and an email, because it has to send you a report.

  • best AI visibility trackerDaily
    ChatGPT
    Gemini
    Perplexity
    Claude

    A real check, right now. Four models asked your question, with the answers they gave back.

  • Prompt ideas
    what is AEO2.4k
    best AEO tools1.1k
    AEO vs SEO860

    Prompt research, free. A sample of the ideas the paid research page ranks.

  • A crawler that only reads. It fetches your pages the way an AI crawler would and never writes.

  • Generators
    llms.txtGenerate
    FAQ schemaGenerate
    Article schemaGenerate

    Copy-paste output. llms.txt and schema markup you can paste straight into the page.

  • 30sto a visibility report on your domain

    Use it in the pitch. Screenshot it, export it. White-label and weekly is the paid plan.

Everything you're wondering

Or ask us anything at hello@zerorank.ai

What image formats are best for the web?

WebP and AVIF offer the best compression with high quality. Use WebP for broad compatibility, AVIF for cutting-edge compression, JPEG for photographs, and PNG only when transparency is needed.

How much can image optimization improve page speed?

Images typically account for 50-70% of total page weight. Proper optimization through compression, modern formats, and correct sizing can reduce page load times by 30-50% or more.